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Related Experiment Video

Updated: Jul 27, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
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[Color-coded duplex sonography (angiodynography) in comparison with phlebography]

W Lösch1, S Beyer-Enke, O Rompel

  • 1Abteilung Diagnostik, Klinikum Nürnberg.

Bildgebung = Imaging
|December 1, 1993
PubMed
Summary

This study compared color-coded duplex sonography with phlebography for diagnosing deep vein thrombosis in the pelvis and legs. Eighty-four patients were examined using sonography, and results were compared to phlebography. The sonography technique successfully identified both complete and partial blood clots with high accuracy. The sensitivity was 92.9%, and the specificity was 97%. The study suggests that sonography can replace phlebography in most cases, especially when focusing on challenging anatomical regions like the pelvic veins and lower leg. Sonography also detected fresh clots in postthrombotic changes, supporting its use in follow-up care.

Keywords:
venous thrombosis imagingsonography diagnostic accuracypelvic vein ultrasounddeep vein thrombosis detection

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Two-Dimensional X-Ray Angiography to Examine Fine Vascular Structure Using a Silicone Rubber Injection Compound
05:26

Two-Dimensional X-Ray Angiography to Examine Fine Vascular Structure Using a Silicone Rubber Injection Compound

Published on: January 7, 2019

Area of Science:

  • Vascular imaging diagnostics
  • Venous thrombosis detection
  • Medical ultrasound applications

Background:

Venous thrombosis diagnosis requires accurate imaging. Prior research has shown that phlebography remains a standard but invasive method. This gap motivated exploring non-invasive alternatives. No prior work had resolved whether color-coded sonography could match phlebography's accuracy. Pelvic and leg vein imaging often lacks clarity with traditional methods. Blood flow visualization is essential for thrombosis detection. Sensitivity and specificity metrics are critical for diagnostic validation. This paper's contribution is a direct comparison of two imaging techniques.

Purpose Of The Study:

The aim is to assess color-coded duplex sonography's accuracy in detecting deep vein thrombosis. The specific problem is whether sonography can replace phlebography in routine diagnostics. Pulmonary embolism investigations often require reliable venous imaging. The motivation is to reduce invasive procedures while maintaining diagnostic quality. Pelvic and leg veins are challenging regions for non-invasive imaging. Blood flow and lumen visualization are key for thrombus detection. The study seeks to quantify sonography's sensitivity and specificity. This approach could reshape diagnostic protocols in vascular medicine.

Main Methods:

Eighty-four patients underwent color-coded duplex sonography for suspected thrombosis. Each leg was examined using sonography followed by phlebography as a reference. The vena iliaca communis to lower leg veins were visualized. Blood flow, lumen size, and compressibility were assessed. Sonography identified both complete and partial thrombi. Phlebography results were compared across all segments. The pelvic veins and lower leg regions were prioritized. Special attention was given to challenging anatomical areas.

Main Results:

Ninety-two point nine percent of thrombi were correctly identified by sonography. Specificity reached ninety-seven percent in multiple vein segments. Pelvic vein imaging showed high accuracy with sonography. Lower leg veins also demonstrated strong sonography results. Sonography detected fresh clots in postthrombotic changes. The Hunter's channel and pelvic veins were successfully visualized. Sonography matched phlebography in most diagnostic scenarios. These findings suggest sonography can replace phlebography in many cases.

Conclusions:

The authors propose that color-coded sonography is a reliable alternative to phlebography. Sonography's high sensitivity and specificity support its use in diagnostics. The procedure can detect both complete and partial thrombi effectively. Sonography is suitable for conservative therapy follow-up. Fresh clots in postthrombotic changes are identifiable with sonography. The pelvic veins and lower leg regions require special attention. Sonography may replace phlebography in most clinical situations. These findings suggest a shift in venous imaging protocols.

The study found 92.9% sensitivity and 97% specificity for sonography in detecting thrombi.

Yes, the study reports that sonography can detect both types of thrombi effectively.

These areas are challenging to visualize and require special attention for accurate diagnosis.

Sonography evaluates blood flow, lumen, and compressibility to detect thrombi.

The study shows that sonography can identify fresh clots in postthrombotic conditions.

The authors propose that sonography can replace phlebography in most clinical cases.